MainActivity.java

package com.example.hsy.myapplication;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.AnimationSet;
import android.view.animation.ScaleAnimation;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
    private static final int ANIMATIONEACHOFFSET = 600; // 每个动画的播放时间间隔
    private AnimationSet aniSet, aniSet2, aniSet3;
    private ImageView btn, wave1, wave2, wave3;
    private Handler handler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
            if (msg.what == 0x222) {
                wave2.startAnimation(aniSet2);
            } else if (msg.what == 0x333) {
//                wave3.startAnimation(aniSet3);
            }
            super.handleMessage(msg);
        }

    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        aniSet = getNewAnimationSet();
        aniSet2 = getNewAnimationSet();
        aniSet3 = getNewAnimationSet();
        setContentView(R.layout.activity_main);
        btn = (ImageView) findViewById(R.id.btn);
        wave1 = (ImageView) findViewById(R.id.wave1);
        wave2 = (ImageView) findViewById(R.id.wave2);
        wave3 = (ImageView) findViewById(R.id.wave3);
        btn.setOnTouchListener(new View.OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        showWaveAnimation();
                        break;
                    case MotionEvent.ACTION_UP:
//                        cancalWaveAnimation();
                        break;
                    case MotionEvent.ACTION_CANCEL:
//                        cancalWaveAnimation();
                        break;
                }
                return true;
            }
        });
    }

    private AnimationSet getNewAnimationSet() {
        AnimationSet as = new AnimationSet(true);
        ScaleAnimation sa = new ScaleAnimation(1f, 2.3f, 1f, 2.3f,
                ScaleAnimation.RELATIVE_TO_SELF, 0.5f,
                ScaleAnimation.RELATIVE_TO_SELF, 0.5f);
        sa.setDuration(ANIMATIONEACHOFFSET * 3);
        sa.setRepeatCount(-1);// 设置循环
        AlphaAnimation aniAlp = new AlphaAnimation(1, 0.1f);
        aniAlp.setRepeatCount(-1);// 设置循环
        as.setDuration(ANIMATIONEACHOFFSET * 3);
        as.addAnimation(sa);
        as.addAnimation(aniAlp);
        return as;
    }

    private void showWaveAnimation() {
        wave1.startAnimation(aniSet);
        handler.sendEmptyMessageDelayed(0x222, ANIMATIONEACHOFFSET);
        handler.sendEmptyMessageDelayed(0x333, ANIMATIONEACHOFFSET * 2);

    }

    private void cancalWaveAnimation() {
        wave1.clearAnimation();
        wave2.clearAnimation();
        wave3.clearAnimation();
    }
}